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' F. McC. STARBUCK, CARBURETER ATTACHMENT.

APPLICATION man SEPT. 25, 1913 Patented Aug. 15, 1916 Witnesses Attorneys FIELDING MQCLUNG STARBUOK, 0T1 WUKSHLENWEQN, DISTRICT G1? COLUMBIA.

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Specifier. tion. of letters Patent.

Patented Aug. 15, 1916.

Application filed September To all whom it may concern:

Be it known that I, FinLnINo MeC'n'oNs Srannocn, a citizen of the United States, residing at Washington, in. the District of Columbia, have invented a new and useful Carbureter Attachment, of which the fol lowing is a specification.

The present invention relates to improve ments in carbureter attachments, one object of the invention, being the provision. of means, by which a less volatile fuel, as for instance, kerosene oil, may he used as a pri mary starting and power giving fuel, in lieu. of the less volatile fuel such as gasolen'e, it being possible with the iiresent attaclnnent to use the usual form of carburetor that is now employed inusing gasolene, this particular structure providing a oneans by which the kerosene is adapted to be held in an insulating porous absorbent material and by which a resistance heating medium is con nccted in heating relation to such insulating and absorbent medium, to heat the oil to volatilize the same at the primary starting of the ex alosion engine.

A furt or object of the present invention, is the provision of means adapted to be con nected in the air intake of a carburetor, adj acent to thespraying nozzle thereof, so that the fuel when injected therethrough by means of the priming means of the carbureter, will be directed upon an insulating and absorbent material, which constitutes a portion of an electric heating unit, the current passing through the same tending to volatilize the fuel so that the initial start-- ing of the engine may be performed with the use of a less volatile fuel as kerosene oil,

A still further object of the present invert tion, is the provision of a tubular member composed of an absorbent material which is porous so as not to offer too great an obstruction to the passage of the carbureted air from the carburetor through the manie fold of the engine and yet at the same time properly support the heating coil so that the kerosene contained therein will be properly volatilized at the initial starting of the engine. 7

With the foregoing and other objects in view which-will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described'and claimed, it lieing'noted that changes in the Precise embodiment of the herein disclosed can be made u spirit of the invention, a drawings Figure l. is a sectional view through a. form of carbureter with the present ention applied in use. Fig. 2 is a longitudinal sectional view through the insulating and absorbent medium showing the resistance coil in operative relation thereto. Fig. 3 is an. enlarged detail View of a modified form. of the absorbent and heating medium Referring to the drawings, and more particularly to T2" l and 2 thereof, C indiflllJCS the car. eter, which is provided with air channel 1., in which is disposed the nipple or nozzle 2 of the fuel supplying means. Leading from the air channel is the nanifold 3, which clearly shown carries the present heatingand absorbing medium 4:, the details of which are clearly shown. This medium 4, consists of a tube 5, preferably of asbestos, or in fact any fiber that will absorb the fuel as the same is emitted from the nozzle into the lower end of the medium, thus permitting the saturation of the asbestos by capillary attraction, the reor heating coil ll being disposed exteriorly l the asbestos tube, having one terminal 7 connected to and insulated from the manifold as at 8 while the other terminal 9 is connected to and insulated from the inanifold as at 10. The tube 5 is preferably coup posed of sheets of asbestos or in fact any porous material that will permit of the pasthere/through without too great interference or impedance of the carbureted air, for the reason that the same is disposed at all times in the path of the inrushing fuel even when the current is not passing through the heating coil. It will thus be seen, that when the priming charge is injected through the nozzle, that the same will be sprayed or atomised upon the absorbent tube, and that by capillary attraction the fuel will. finally extend the full length of the asbestos tube At this point, the resistance .coil is energized by any well known means, so that the heat therefrom will volatilize the fuel absorbed in the tube,the explosionengine (not shown) being operated to draw the vapor and the air to conduct the desired carbureted air directly into the explosion. chamber. After the engine is properly started from the initial volatilised and. priming charge, the resistance medium is cutout and thereafter the engine will operate irectly by drawing in a carbureted air composed of the kerosene oil and air.

In the form of heating means shown in Fig. 3, the central pole or electrode 11 of the spark plug 12 has connected to its end, the metal connection or rod 13 whose lower end is connected at 11 to the lower end of the spiral resistance coil 15, the upper end of which is grounded to the coupling 15. The asbestos tubular member 5 is wound around the rod and the spiral coil 15 is wound around the said tubular member 5'.- The outer coupling 16 of this member is adapted to permit the attachment thereof at any desired point, or accordingto the construction of the carbureter upon which the present heating device is employed, it being essential, however, that the asbestos be placed in such a position as to receive the atomized spray of fuel. from the nozzle or other fuel directing means of the c arbureter.

lVhat is claimed is:

The combination with the intake manifold of an explosive engine, of an electrical heating device for volatilizing liquid fuel, adapted to be arranged longitudinally in the path of fuel in passing from the carbureter to the cylinder, said heating device consisting of a tubular body of porous insulating material, into one end of which/the fuel to be volatilized is projected, and a bare metal coil adapted to be included in an electrical circuit and arranged surrounding and coiled upon said body with its extremities connected with terminals located exterior-1y of the manifold.

In testimony that I claim the foregoing as my own, I have hereto afiixed my signature in the presence of two witnesses.

FIELDING MCCLUNG STARBUCK.

\Vitnesses:

ALONZO C. NELSON, JULIUS V. AUGUST. 

